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Expired Canadian patentCanada

Introducing processing delay as a multiple of the time slot duration

CA 2195489 C · Owner: Golden, Glenn David · Inventors: Martin, Carol Catalano; Golden, Glenn David; Winters, Jack Harriman

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Abstract From the Canadian patent

An apparatus for performance improvement of a burst mode digital wireless receiver comprises a processing circuit for processing a plurality of received signals and providing a processed signal and a delay circuit for introducing a predetermined delay to the processed signal. The delay circuit is coupled to the processing circuit. The predetermined delay is such that the processed signal is delayed to correspond with a later data burst. The processing circuit weights and combines the received signals where the, processing circuit reduces a mean squared error of an output signal. The processing circuit weights and combines the received signals using a predetermined symbol pattern within a …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 20, 1997 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 1997
GrantedMay 8, 2001
Term endedJanuary 20, 2017
Patent numberCA 2195489 C
Classification (IPC)H04J3/00 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJan 20, 1997Patent grantedMay 8, 2001Term endedJan 20, 2017

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.